chore(packages): declare every tool the configs reference

Audit of configs, scripts, tmux-palette items and television cables
against installed packages. Adds the missing pacman/AUR/brew entries,
a [omarchy] repo list installed only where that repo is configured,
and cargo installs in 40-post. 10-packages filters lists with pacman -T
so provider packages (mise-bin, yazi-git) are not replaced, and uses
yay with paru as fallback. noctalia-shell -> noctalia-git (AUR name).

AGENTS.md

@@ -58,6 +58,21 @@ Pulling a remote change before the refresh window: `chezmoi apply --refresh-exte
 4. `mv ~/.config/<app> /tmp/bak && chezmoi apply --force ~/.config/<app>`; diff against the repo, then delete the backup.
 5. Update `docs/` (the tool's page, `docs/terminal/index.mdx` or sibling index, `docs/chezmoi/externals-and-ignore.mdx`) and any alias pointing at the old source path (`dot_config/fish/conf.d/20-aliases.fish`, `.chezmoidata/aliases.yaml`).
 
+## Packages: every referenced tool must be declared
+
+`.chezmoidata/packages.yaml` is the install manifest; the goal is `chezmoi init --apply` on a fresh Arch (Omarchy) machine yields a working setup. When a config, script, tmux-palette item, television cable `requirements`, or compositor binding starts calling a new binary, declare its package in the same change:
+
+| Key | Installed by | When |
+| --- | --- | --- |
+| `arch.pacman` / `arch.aur` | `10-packages` (pacman / `yay` or `paru`) | every Linux role |
+| `arch.desktop.pacman` / `.aur` | same | roles `desktop`, `laptop` |
+| `arch.desktop.omarchy` | pacman, only if `pacman-conf -l` lists `omarchy` | Omarchy machines |
+| `darwin.brew` / `.cask` | Homebrew | macOS |
+| `shared.cargo` | `40-post`, if `cargo` exists | every OS |
+| `shared.gh_extensions` | `20-gh-extensions` | every OS |
+
+Find the package with `pacman -Qo "$(command -v <bin>)"`; `pacman -Qm` lists AUR/foreign packages, `pacman -Si <pkg>` shows the repo (`extra` vs `omarchy`). Verify names before committing: `pacman -Si` for repo packages, `https://aur.archlinux.org/rpc/v5/info?arg[]=<pkg>` for AUR, `https://formulae.brew.sh/api/formula/<name>.json` for brew. Hyprland/Waybar/`omarchy-*` come with Omarchy and are not declared. Tools installed through `mise` (`~/.config/mise/config.toml`, local-only) are not covered by the manifest.
+
 ## Verify
 
 - `chezmoi diff` empty after apply.